Access Credential - Explore the Science & Experts | ideXlab

Scan Science and Technology

Contact Leading Edge Experts & Companies

Access Credential

The Experts below are selected from a list of 2388 Experts worldwide ranked by ideXlab platform

Access Credential – Free Register to Access Experts & Abstracts

Zongyang Zhang – One of the best experts on this subject based on the ideXlab platform.

  • FDCO: attribute-based fast data cloud-outsourcing scheme for mobile devices
    International Journal of Information Security, 2019
    Co-Authors: Yanting Zhang, Jianwei Liu, Zongyang Zhang, Weiran Liu

    Abstract:

    We propose an attribute-based fast data cloud-outsourcing (FDCO) scheme, which shows great performance in mobile devices. Technically, this work is a CCA-secure online/offline key encapsulation scheme based on ciphertext-policy attribute-based encryption with public validity test and indirect user revocation mechanism. We adapt it to a mobile cloud-outsourcing scenario and present a concrete system. Our scheme is equipped with the following desirable properties: First, encapsulation needs only several lightweight online modular addition/multiplication operations, which is appealing to mobile users. Second, it is equipped with an efficient indirect user revocation mechanism to support Access Credential revocation. Third, it supports public encapsulation validity test, which enables auditors to filter invalid data, so as to prevent attackers from sending invalid data to stuff users’ accounts. Finally, we prove its security against chosen-ciphertext attacks (CCA) in the standard model. We conduct theoretical analyses and extensive experiments to show that our scheme is practical and efficient in application.

  • ISC – Multi-authority Fast Data Cloud-Outsourcing for Mobile Devices
    Developments in Language Theory, 2018
    Co-Authors: Yanting Zhang, Jianwei Liu, Zongyang Zhang

    Abstract:

    We propose a multi-authority fast data cloud-outsourcing (MFDCO) scheme especially suitable for mobile devices. It is a multi-authority online/offline encapsulation scheme based on efficient large-universe ciphertext-policy attribute-based encryption, and supports fine-grained Access control, dynamic revocation, and public validity test. Any party can become an authority to participate in the distribution of attribute Credential and Credential updating. Apart from the initial generation of public global parameters, there is no requirement for any coordination among distinct authorities. In addition, the MFDCO scheme allows data owners to enforce fine-grained Access control through lightweight online operations, which is extremely friendly for mobile users. It is equipped with an efficient revocation mechanism to realize dynamic Access Credential revocations. It also allows public encapsulation validity test, thus preventing attackers from stuffing users’ data storage accounts with invalid encapsulations, as well as achieving security against active attacks. Comprehensive analyses illustrate that the MFDCO scheme is suitable for commercial sensitive data cloud-outsourcing, especially in public cloud environment.

Yanting Zhang – One of the best experts on this subject based on the ideXlab platform.

  • FDCO: attribute-based fast data cloud-outsourcing scheme for mobile devices
    International Journal of Information Security, 2019
    Co-Authors: Yanting Zhang, Jianwei Liu, Zongyang Zhang, Weiran Liu

    Abstract:

    We propose an attribute-based fast data cloud-outsourcing (FDCO) scheme, which shows great performance in mobile devices. Technically, this work is a CCA-secure online/offline key encapsulation scheme based on ciphertext-policy attribute-based encryption with public validity test and indirect user revocation mechanism. We adapt it to a mobile cloud-outsourcing scenario and present a concrete system. Our scheme is equipped with the following desirable properties: First, encapsulation needs only several lightweight online modular addition/multiplication operations, which is appealing to mobile users. Second, it is equipped with an efficient indirect user revocation mechanism to support Access Credential revocation. Third, it supports public encapsulation validity test, which enables auditors to filter invalid data, so as to prevent attackers from sending invalid data to stuff users’ accounts. Finally, we prove its security against chosen-ciphertext attacks (CCA) in the standard model. We conduct theoretical analyses and extensive experiments to show that our scheme is practical and efficient in application.

  • ISC – Multi-authority Fast Data Cloud-Outsourcing for Mobile Devices
    Developments in Language Theory, 2018
    Co-Authors: Yanting Zhang, Jianwei Liu, Zongyang Zhang

    Abstract:

    We propose a multi-authority fast data cloud-outsourcing (MFDCO) scheme especially suitable for mobile devices. It is a multi-authority online/offline encapsulation scheme based on efficient large-universe ciphertext-policy attribute-based encryption, and supports fine-grained Access control, dynamic revocation, and public validity test. Any party can become an authority to participate in the distribution of attribute Credential and Credential updating. Apart from the initial generation of public global parameters, there is no requirement for any coordination among distinct authorities. In addition, the MFDCO scheme allows data owners to enforce fine-grained Access control through lightweight online operations, which is extremely friendly for mobile users. It is equipped with an efficient revocation mechanism to realize dynamic Access Credential revocations. It also allows public encapsulation validity test, thus preventing attackers from stuffing users’ data storage accounts with invalid encapsulations, as well as achieving security against active attacks. Comprehensive analyses illustrate that the MFDCO scheme is suitable for commercial sensitive data cloud-outsourcing, especially in public cloud environment.

Kim-kwang Raymond Choo – One of the best experts on this subject based on the ideXlab platform.

  • CryptCloud+: Secure and Expressive Data Access Control for Cloud Storage
    IEEE Transactions on Services Computing, 2019
    Co-Authors: Jianting Ning, Zhenfu Cao, Xiaolei Dong, Kaitai Liang, Lifei Wei, Kim-kwang Raymond Choo

    Abstract:

    Secure cloud storage, an emerging cloud service, guarantees the confidentiality of outsourced data while providing flexible data Access control for cloud users whose data are out of their physical control. Ciphertext-Policy Attribute-Based Encryption (CP-ABE) is one of the promising secure mechanisms to support fine-grained Access control on encrypted data in cloud settings. However, due to its inherent “all-or-nothing” decryption control characteristic, there is a risk for the misuse of Access Credentials. In this paper, we consider the two main types of Access Credential misuse, namely: semi-trusted authority’s illegal Access Credential (re-)distribution, and cloud user’s illegal Access Credential leakage. To mitigate these two types of Access Credential misuse, we propose the first accountable authority revokable CP-ABE based cloud storage system with white-box traceability and auditing, referred to as CryptCloud+. We also prove the security of our system and present the experimental results to demonstrate the utility of our system.